Revert "Revert "Merge pull request #232 from rkoster/single_fog_connection""

This reverts commit 64829476ce78d67c22541209cc44d4437797f042.
Removed fog_connection defaults
Added missing conditional to nginx config
Suggested fog connections default solution

Signed-off-by: Casey McTaggart <cmctaggart@pivotallabs.com>
Single default for local fog connection

Signed-off-by: Casey McTaggart <cmctaggart@pivotallabs.com>